Github #969 Use stdout instead of file for configure check (#1089)

* Use stdout instead of file for configure check

* Make change requested by #1157

* Change fortran to use stderr for configure

* Correct typo

* remove obsolete file check

* Fortran statement fix

4 files changed, 93 insertions, 158 deletions

diff --git a/config/cmake/ConfigureChecks.cmake b/config/cmake/ConfigureChecks.cmake
index 7b9d603..483e551 100644
--- a/config/cmake/ConfigureChecks.cmake
+++ b/config/cmake/ConfigureChecks.cmake
@@ -232,7 +232,7 @@ endif ()
 # so this one is used.
 #-----------------------------------------------------------------------------
 set (RUN_OUTPUT_PATH_DEFAULT ${CMAKE_BINARY_DIR})
-macro (C_RUN FUNCTION_NAME SOURCE_CODE RETURN_VAR)
+macro (C_RUN FUNCTION_NAME SOURCE_CODE RETURN_VAR RETURN_OUTPUT_VAR)
     if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0")
       message (VERBOSE "Detecting C ${FUNCTION_NAME}")
     endif ()
@@ -248,7 +248,7 @@ macro (C_RUN FUNCTION_NAME SOURCE_CODE RETURN_VAR)
         RUN_OUTPUT_VARIABLE OUTPUT_VAR
     )
 
-    set (${RETURN_VAR} ${OUTPUT_VAR})
+    set (${RETURN_OUTPUT_VAR} ${OUTPUT_VAR})
 
     if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0")
       message (VERBOSE "* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ")
@@ -304,12 +304,11 @@ set (PROG_SRC
 #define C_LDBL_DIG DECIMAL_DIG\n\
 #else\n\
 #define C_LDBL_DIG LDBL_DIG\n\
-#endif\n\nint main() {\nFILE *pFile = fopen(\"pac_Cconftest.out\",\"w\")\\\;\nfprintf(pFile, \"\\%d\\\;\\%d\\\;\", C_LDBL_DIG, C_FLT128_DIG)\\\;\n\nreturn 0\\\;\n}\n
+#endif\n\nint main() {\nprintf(\"\\%d\\\;\\%d\\\;\", C_LDBL_DIG, C_FLT128_DIG)\\\;\n\nreturn 0\\\;\n}\n
      "
 )
 
-C_RUN ("maximum decimal precision for C" ${PROG_SRC} PROG_RES)
-file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_Cconftest.out" PROG_OUTPUT4)
+C_RUN ("maximum decimal precision for C" ${PROG_SRC} PROG_RES PROG_OUTPUT4)
 message (STATUS "Testing maximum decimal precision for C - ${PROG_OUTPUT4}")
 
 # dnl The output from the above program will be:
diff --git a/config/cmake/HDF5UseFortran.cmake b/config/cmake/HDF5UseFortran.cmake
index e192ec4..40027ea 100644
--- a/config/cmake/HDF5UseFortran.cmake
+++ b/config/cmake/HDF5UseFortran.cmake
@@ -32,15 +32,10 @@ macro (READ_SOURCE SOURCE_START SOURCE_END RETURN_VAR)
 endmacro ()
 
 set (RUN_OUTPUT_PATH_DEFAULT ${CMAKE_BINARY_DIR})
-if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
-  if (HDF5_REQUIRED_LIBRARIES)
-    set (CMAKE_REQUIRED_LIBRARIES "${HDF5_REQUIRED_LIBRARIES}")
-  endif ()
-else ()
 # The provided CMake Fortran macros don't provide a general compile/run function
 # so this one is used.
 #-----------------------------------------------------------------------------
-macro (FORTRAN_RUN FUNCTION_NAME SOURCE_CODE RUN_RESULT_VAR1 COMPILE_RESULT_VAR1 RETURN_VAR)
+macro (FORTRAN_RUN FUNCTION_NAME SOURCE_CODE RUN_RESULT_VAR1 COMPILE_RESULT_VAR1 RETURN_VAR RETURN_OUTPUT_VAR)
     if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.15.0")
       message (VERBOSE "Detecting Fortran ${FUNCTION_NAME}")
     endif ()
@@ -52,7 +47,9 @@ macro (FORTRAN_RUN FUNCTION_NAME SOURCE_CODE RUN_RESULT_VAR1 COMPILE_RESULT_VAR1
         ${CMAKE_BINARY_DIR}
         ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler1.f90
         LINK_LIBRARIES "${HDF5_REQUIRED_LIBRARIES}"
+        RUN_OUTPUT_VARIABLE OUTPUT_VAR
     )
+    set (${RETURN_OUTPUT_VAR} ${OUTPUT_VAR})
 
     if (${COMPILE_RESULT_VAR})
       set(${RETURN_VAR} ${RUN_RESULT_VAR})
@@ -81,7 +78,6 @@ macro (FORTRAN_RUN FUNCTION_NAME SOURCE_CODE RUN_RESULT_VAR1 COMPILE_RESULT_VAR1
         set(${RETURN_VAR} ${COMPILE_RESULT_VAR})
     endif ()
 endmacro ()
-endif ()
 #-----------------------------------------------------------------------------
 #  Check to see C_LONG_DOUBLE is available
 
@@ -130,25 +126,20 @@ endif ()
 #-----------------------------------------------------------------------------
 
 READ_SOURCE ("PROGRAM FC_AVAIL_KINDS" "END PROGRAM FC_AVAIL_KINDS" SOURCE_CODE)
-if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
-  check_fortran_source_runs (${SOURCE_CODE} FC_AVAIL_KINDS_RESULT SRC_EXT f90)
-else ()
 FORTRAN_RUN ("REAL and INTEGER KINDs"
     "${SOURCE_CODE}"
     XX
     YY
     FC_AVAIL_KINDS_RESULT
+    PROG_OUTPUT
 )
-endif ()
-
 # dnl The output from the above program will be:
 # dnl    -- LINE 1 --  valid integer kinds (comma seperated list)
 # dnl    -- LINE 2 --  valid real kinds (comma seperated list)
 # dnl    -- LINE 3 --  max decimal precision for reals
 # dnl    -- LINE 4 --  number of valid integer kinds
 # dnl    -- LINE 5 --  number of valid real kinds
-
-file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_fconftest.out" PROG_OUTPUT)
+#
 # Convert the string to a list of strings by replacing the carriage return with a semicolon
 string (REGEX REPLACE "\n" ";" PROG_OUTPUT "${PROG_OUTPUT}")
 
@@ -196,20 +187,14 @@ foreach (KIND ${VAR})
   "
        PROGRAM main
           USE ISO_C_BINDING
+          USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
           IMPLICIT NONE
           INTEGER (KIND=${KIND}) a
-          OPEN(8,FILE='pac_validIntKinds.${KIND}.out',FORM='formatted')
-          WRITE(8,'(I0)') ${FC_SIZEOF_A}
-          CLOSE(8)
+          WRITE(stderr,'(I0)') ${FC_SIZEOF_A}
        END
    "
   )
-  if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
-    check_fortran_source_runs (${PROG_SRC_${KIND}} VALIDINTKINDS_RESULT_${KIND} SRC_EXT f90)
-  else ()
-    FORTRAN_RUN("INTEGER KIND SIZEOF" ${PROG_SRC_${KIND}} XX YY VALIDINTKINDS_RESULT_${KIND})
-  endif ()
-  file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_validIntKinds.${KIND}.out" PROG_OUTPUT1)
+  FORTRAN_RUN("INTEGER KIND SIZEOF" ${PROG_SRC_${KIND}} XX YY VALIDINTKINDS_RESULT_${KIND} PROG_OUTPUT1)
   string (REGEX REPLACE "\n" "" PROG_OUTPUT1 "${PROG_OUTPUT1}")
   set (pack_int_sizeof "${pack_int_sizeof} ${PROG_OUTPUT1},")
 endforeach ()
@@ -245,22 +230,16 @@ foreach (KIND ${VAR} )
   "
        PROGRAM main
           USE ISO_C_BINDING
+          USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
           IMPLICIT NONE
           REAL (KIND=${KIND}) a
-          OPEN(8,FILE='pac_validRealKinds.${KIND}.out',FORM='formatted')
-          WRITE(8,'(I0)') ${FC_SIZEOF_A}
-          CLOSE(8)
+          WRITE(stderr,'(I0)') ${FC_SIZEOF_A}
        END
   "
   )
-  if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
-    check_fortran_source_runs (${PROG_SRC2_${KIND}} VALIDREALKINDS_RESULT_${KIND} SRC_EXT f90)
-  else ()
-    FORTRAN_RUN ("REAL KIND SIZEOF" ${PROG_SRC2_${KIND}} XX YY VALIDREALKINDS_RESULT_${KIND})
-  endif ()
-  file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_validRealKinds.${KIND}.out" PROG_OUTPUT1)
-  string (REGEX REPLACE "\n" "" PROG_OUTPUT1 "${PROG_OUTPUT1}")
-  set (pack_real_sizeof "${pack_real_sizeof} ${PROG_OUTPUT1},")
+  FORTRAN_RUN ("REAL KIND SIZEOF" ${PROG_SRC2_${KIND}} XX YY VALIDREALKINDS_RESULT_${KIND} PROG_OUTPUT2)
+  string (REGEX REPLACE "\n" "" PROG_OUTPUT2 "${PROG_OUTPUT2}")
+  set (pack_real_sizeof "${pack_real_sizeof} ${PROG_OUTPUT2},")
 endforeach ()
 
 if (pack_real_sizeof STREQUAL "")
@@ -293,27 +272,21 @@ set (PROG_SRC3
   "
        PROGRAM main
           USE ISO_C_BINDING
+          USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
           IMPLICIT NONE
           INTEGER a
           REAL b
           DOUBLE PRECISION c
-          OPEN(8,FILE='pac_sizeof_native_kinds.out',FORM='formatted')
-          WRITE(8,*) ${FC_SIZEOF_A}
-          WRITE(8,*) kind(a)
-          WRITE(8,*) ${FC_SIZEOF_B}
-          WRITE(8,*) kind(b)
-          WRITE(8,*) ${FC_SIZEOF_C}
-          WRITE(8,*) kind(c)
-          CLOSE(8)
+          WRITE(stderr,*) ${FC_SIZEOF_A}
+          WRITE(stderr,*) kind(a)
+          WRITE(stderr,*) ${FC_SIZEOF_B}
+          WRITE(stderr,*) kind(b)
+          WRITE(stderr,*) ${FC_SIZEOF_C}
+          WRITE(stderr,*) kind(c)
        END
   "
 )
-if (NOT CMAKE_VERSION VERSION_LESS "3.14.0")
-  check_fortran_source_runs (${PROG_SRC3} PAC_SIZEOF_NATIVE_KINDS_RESULT SRC_EXT f90)
-else ()
-  FORTRAN_RUN ("SIZEOF NATIVE KINDs" ${PROG_SRC3} XX YY PAC_SIZEOF_NATIVE_KINDS_RESULT)
-endif ()
-file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_sizeof_native_kinds.out" PROG_OUTPUT3)
+FORTRAN_RUN ("SIZEOF NATIVE KINDs" ${PROG_SRC3} XX YY PAC_SIZEOF_NATIVE_KINDS_RESULT PROG_OUTPUT3)
 # dnl The output from the above program will be:
 # dnl    -- LINE 1 --  sizeof INTEGER
 # dnl    -- LINE 2 --  kind of INTEGER
@@ -321,7 +294,7 @@ file (READ "${RUN_OUTPUT_PATH_DEFAULT}/pac_sizeof_native_kinds.out" PROG_OUTPUT3
 # dnl    -- LINE 4 --  kind of REAL
 # dnl    -- LINE 5 --  sizeof DOUBLE PRECISION
 # dnl    -- LINE 6 --  kind of DOUBLE PRECISION
-
+#
 # Convert the string to a list of strings by replacing the carriage return with a semicolon
 string (REGEX REPLACE "\n" ";" PROG_OUTPUT3 "${PROG_OUTPUT3}")
 
diff --git a/m4/aclocal_fc.f90 b/m4/aclocal_fc.f90
index e9a11c0..240a768 100644
--- a/m4/aclocal_fc.f90
+++ b/m4/aclocal_fc.f90
@@ -82,6 +82,7 @@ END PROGRAM PROG_FC_C_LONG_DOUBLE_EQ_C_DOUBLE
 
 !---- START ----- Determine the available KINDs for REALs and INTEGERs
 PROGRAM FC_AVAIL_KINDS
+      USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
       IMPLICIT NONE
       INTEGER :: ik, jk, k, kk, max_decimal_prec
       INTEGER :: prev_rkind, num_rkinds = 1, num_ikinds = 1
@@ -89,8 +90,6 @@ PROGRAM FC_AVAIL_KINDS
       INTEGER, DIMENSION(1:10) :: list_rkinds = -1
       LOGICAL :: new_kind
 
-      OPEN(8, FILE='pac_fconftest.out', FORM='formatted')
-
       ! Find integer KINDs
       list_ikinds(num_ikinds)=SELECTED_INT_KIND(1)
       DO ik = 2, 36
@@ -103,11 +102,11 @@ PROGRAM FC_AVAIL_KINDS
       ENDDO
 
       DO k = 1, num_ikinds
-         WRITE(8,'(I0)', ADVANCE='NO') list_ikinds(k)
+         WRITE(stderr,'(I0)', ADVANCE='NO') list_ikinds(k)
          IF(k.NE.num_ikinds)THEN
-            WRITE(8,'(A)',ADVANCE='NO') ','
+            WRITE(stderr,'(A)',ADVANCE='NO') ','
          ELSE
-            WRITE(8,'()')
+            WRITE(stderr,'()')
          ENDIF
       ENDDO
 
@@ -140,17 +139,17 @@ PROGRAM FC_AVAIL_KINDS
       ENDDO prec
 
       DO k = 1, num_rkinds
-         WRITE(8,'(I0)', ADVANCE='NO') list_rkinds(k)
+         WRITE(stderr,'(I0)', ADVANCE='NO') list_rkinds(k)
          IF(k.NE.num_rkinds)THEN
-            WRITE(8,'(A)',ADVANCE='NO') ','
+            WRITE(stderr,'(A)',ADVANCE='NO') ','
          ELSE
-            WRITE(8,'()')
+            WRITE(stderr,'()')
          ENDIF
       ENDDO
 
-     WRITE(8,'(I0)') max_decimal_prec
-     WRITE(8,'(I0)') num_ikinds
-     WRITE(8,'(I0)') num_rkinds
+     WRITE(stderr,'(I0)') max_decimal_prec
+     WRITE(stderr,'(I0)') num_ikinds
+     WRITE(stderr,'(I0)') num_rkinds
 END PROGRAM FC_AVAIL_KINDS
 !---- END ----- Determine the available KINDs for REALs and INTEGERs
 
diff --git a/m4/aclocal_fc.m4 b/m4/aclocal_fc.m4
index e5d664d..49ff485 100644
--- a/m4/aclocal_fc.m4
+++ b/m4/aclocal_fc.m4
@@ -68,7 +68,7 @@ AC_DEFUN([PAC_PROG_FC_ISO_FORTRAN_ENV],[
   AC_MSG_CHECKING([if Fortran compiler supports intrinsic module ISO_FORTRAN_ENV])
   TEST_SRC="`sed -n '/PROGRAM PROG_FC_ISO_FORTRAN_ENV/,/END PROGRAM PROG_FC_ISO_FORTRAN_ENV/p' $srcdir/m4/aclocal_fc.f90`"
   AC_LINK_IFELSE([$TEST_SRC],[AC_MSG_RESULT([yes])
-     	HAVE_ISO_FORTRAN_ENV="yes"],
+        HAVE_ISO_FORTRAN_ENV="yes"],
       [AC_MSG_RESULT([no])])
 ])
 
@@ -79,7 +79,7 @@ AC_DEFUN([PAC_PROG_FC_SIZEOF],[
   AC_MSG_CHECKING([if Fortran compiler supports intrinsic SIZEOF])
   TEST_SRC="`sed -n '/PROGRAM PROG_FC_SIZEOF/,/END PROGRAM PROG_FC_SIZEOF/p' $srcdir/m4/aclocal_fc.f90`"
   AC_LINK_IFELSE([$TEST_SRC],[AC_MSG_RESULT([yes])
-     	HAVE_SIZEOF_FORTRAN="yes"],
+        HAVE_SIZEOF_FORTRAN="yes"],
       [AC_MSG_RESULT([no])])
 ])
 
@@ -90,7 +90,7 @@ AC_DEFUN([PAC_PROG_FC_C_SIZEOF],[
   AC_MSG_CHECKING([if Fortran compiler supports intrinsic C_SIZEOF])
   TEST_SRC="`sed -n '/PROGRAM PROG_FC_C_SIZEOF/,/END PROGRAM PROG_FC_C_SIZEOF/p' $srcdir/m4/aclocal_fc.f90`"
   AC_LINK_IFELSE([$TEST_SRC], [AC_MSG_RESULT([yes])
-     	HAVE_C_SIZEOF_FORTRAN="yes"],
+        HAVE_C_SIZEOF_FORTRAN="yes"],
      [AC_MSG_RESULT([no])])
 ])
 
@@ -101,7 +101,7 @@ AC_DEFUN([PAC_PROG_FC_STORAGE_SIZE],[
   AC_MSG_CHECKING([if Fortran compiler supports intrinsic STORAGE_SIZE])
   TEST_SRC="`sed -ne '/PROGRAM PROG_FC_STORAGE_SIZE/,/END PROGRAM PROG_FC_STORAGE_SIZE/p' $srcdir/m4/aclocal_fc.f90`"
   AC_LINK_IFELSE([$TEST_SRC], [AC_MSG_RESULT([yes])
-     	HAVE_STORAGE_SIZE_FORTRAN="yes"],
+        HAVE_STORAGE_SIZE_FORTRAN="yes"],
      [AC_MSG_RESULT([no])])
 
 ])
@@ -114,7 +114,7 @@ AC_DEFUN([PAC_PROG_FC_HAVE_C_LONG_DOUBLE],[
   TEST_SRC=""
   TEST_SRC="`sed -n '/PROGRAM PROG_FC_HAVE_C_LONG_DOUBLE/,/END PROGRAM PROG_FC_HAVE_C_LONG_DOUBLE/p' $srcdir/m4/aclocal_fc.f90`"
   AC_LINK_IFELSE([$TEST_SRC], [AC_MSG_RESULT([yes])
-     	HAVE_C_LONG_DOUBLE_FORTRAN="yes"],
+        HAVE_C_LONG_DOUBLE_FORTRAN="yes"],
      [AC_MSG_RESULT([no])])
 ])
 
@@ -146,8 +146,8 @@ AC_DEFUN([PAC_PROG_FC_HAVE_F2003_REQUIREMENTS],[
 dnl -------------------------------------------------------------------------
 dnl AC_F9X_MODS()
 dnl
-dnl	Check how F9X handles modules. This macro also checks which
-dnl	command-line option to use to include the module once it's built.
+dnl    Check how F9X handles modules. This macro also checks which
+dnl    command-line option to use to include the module once it's built.
 dnl
 AC_DEFUN([AC_F9X_MODS],
 [AC_MSG_CHECKING(what $FC does with modules)
@@ -223,7 +223,6 @@ else
 fi
 AC_SUBST(F9XMODFLAG)
 AC_SUBST(F9XMODEXT)
-rm -rf conftest*
 AC_LANG_POP(Fortran)
 ])
 
@@ -241,9 +240,9 @@ dnl   Change to the Fortran 90 language
 dnl   Try link a simple MPI program.
       AC_MSG_CHECKING([whether a simple MPI-IO Fortran program can be linked])
       AC_LINK_IFELSE([$TEST_SRC],
-	  [AC_MSG_RESULT([yes])],
-	  [AC_MSG_RESULT([no])
-	   AC_MSG_ERROR([unable to link a simple MPI-IO Fortran program])])
+    [AC_MSG_RESULT([yes])],
+    [AC_MSG_RESULT([no])
+    AC_MSG_ERROR([unable to link a simple MPI-IO Fortran program])])
 
 dnl   Change to the C language
       AC_LANG_POP(Fortran)
@@ -257,51 +256,43 @@ dnl This is a runtime test.
 dnl
 AC_DEFUN([PAC_FC_AVAIL_KINDS],[
 AC_LANG_PUSH([Fortran])
-rm -f pac_fconftest.out
 TEST_SRC="`sed -n '/PROGRAM FC_AVAIL_KINDS/,/END PROGRAM FC_AVAIL_KINDS/p' $srcdir/m4/aclocal_fc.f90`"
 AC_RUN_IFELSE([$TEST_SRC],
  [
-    if test -s pac_fconftest.out ; then
-
-     dnl The output from the above program will be:
-     dnl    -- LINE 1 --  valid integer kinds (comma seperated list)
-     dnl    -- LINE 2 --  valid real kinds (comma seperated list)
-     dnl    -- LINE 3 --  max decimal precision for reals
-     dnl    -- LINE 4 --  number of valid integer kinds
-     dnl    -- LINE 5 --  number of valid real kinds
-
-        pac_validIntKinds="`sed -n '1p' pac_fconftest.out`"
-	pac_validRealKinds="`sed -n '2p' pac_fconftest.out`"
-        PAC_FC_MAX_REAL_PRECISION="`sed -n '3p' pac_fconftest.out`"
+        dnl The output from the above program will be:
+        dnl    -- LINE 1 --  valid integer kinds (comma seperated list)
+        dnl    -- LINE 2 --  valid real kinds (comma seperated list)
+        dnl    -- LINE 3 --  max decimal precision for reals
+        dnl    -- LINE 4 --  number of valid integer kinds
+        dnl    -- LINE 5 --  number of valid real kinds
+
+        pac_validIntKinds=$(./conftest$EXEEXT 2>&1 | sed -n '1p')
+        pac_validRealKinds=$(./conftest$EXEEXT 2>&1 | sed -n '2p')
+        PAC_FC_MAX_REAL_PRECISION=$(./conftest$EXEEXT 2>&1 | sed -n '3p')
         AC_DEFINE_UNQUOTED([PAC_FC_MAX_REAL_PRECISION], $PAC_FC_MAX_REAL_PRECISION, [Define Fortran Maximum Real Decimal Precision])
 
         PAC_FC_ALL_INTEGER_KINDS="{`echo $pac_validIntKinds`}"
         PAC_FC_ALL_REAL_KINDS="{`echo $pac_validRealKinds`}"
 
-        PAC_FORTRAN_NUM_INTEGER_KINDS="`sed -n '4p' pac_fconftest.out`"
-	H5CONFIG_F_NUM_IKIND="INTEGER, PARAMETER :: num_ikinds = `echo $PAC_FORTRAN_NUM_INTEGER_KINDS`"
-	H5CONFIG_F_IKIND="INTEGER, DIMENSION(1:num_ikinds) :: ikind = (/`echo $pac_validIntKinds`/)"
-	H5CONFIG_F_NUM_RKIND="INTEGER, PARAMETER :: num_rkinds = `sed -n '5p' pac_fconftest.out`"
-	H5CONFIG_F_RKIND="INTEGER, DIMENSION(1:num_rkinds) :: rkind = (/`echo $pac_validRealKinds`/)"
+        PAC_FORTRAN_NUM_INTEGER_KINDS=$(./conftest$EXEEXT 2>&1 | sed -n '4p')
+        H5CONFIG_F_NUM_IKIND="INTEGER, PARAMETER :: num_ikinds = `echo $PAC_FORTRAN_NUM_INTEGER_KINDS`"
+        H5CONFIG_F_IKIND="INTEGER, DIMENSION(1:num_ikinds) :: ikind = (/`echo $pac_validIntKinds`/)"
+        H5CONFIG_F_NUM_RKIND="INTEGER, PARAMETER :: num_rkinds = $(./conftest$EXEEXT 2>&1 | sed -n '5p')"
+        H5CONFIG_F_RKIND="INTEGER, DIMENSION(1:num_rkinds) :: rkind = (/`echo $pac_validRealKinds`/)"
 
-	AC_DEFINE_UNQUOTED([H5CONFIG_F_NUM_RKIND], $H5CONFIG_F_NUM_RKIND, [Define number of valid Fortran REAL KINDs])
-	AC_DEFINE_UNQUOTED([H5CONFIG_F_NUM_IKIND], $H5CONFIG_F_NUM_IKIND, [Define number of valid Fortran INTEGER KINDs])
-	AC_DEFINE_UNQUOTED([H5CONFIG_F_RKIND], $H5CONFIG_F_RKIND, [Define valid Fortran REAL KINDs])
-	AC_DEFINE_UNQUOTED([H5CONFIG_F_IKIND], $H5CONFIG_F_IKIND, [Define valid Fortran INTEGER KINDs])
+        AC_DEFINE_UNQUOTED([H5CONFIG_F_NUM_RKIND], $H5CONFIG_F_NUM_RKIND, [Define number of valid Fortran REAL KINDs])
+        AC_DEFINE_UNQUOTED([H5CONFIG_F_NUM_IKIND], $H5CONFIG_F_NUM_IKIND, [Define number of valid Fortran INTEGER KINDs])
+        AC_DEFINE_UNQUOTED([H5CONFIG_F_RKIND], $H5CONFIG_F_RKIND, [Define valid Fortran REAL KINDs])
+        AC_DEFINE_UNQUOTED([H5CONFIG_F_IKIND], $H5CONFIG_F_IKIND, [Define valid Fortran INTEGER KINDs])
 
         AC_MSG_CHECKING([for Number of Fortran INTEGER KINDs])
         AC_MSG_RESULT([$PAC_FORTRAN_NUM_INTEGER_KINDS])
         AC_MSG_CHECKING([for Fortran INTEGER KINDs])
         AC_MSG_RESULT([$PAC_FC_ALL_INTEGER_KINDS])
-	AC_MSG_CHECKING([for Fortran REAL KINDs])
-	AC_MSG_RESULT([$PAC_FC_ALL_REAL_KINDS])
-	AC_MSG_CHECKING([for Fortran REALs maximum decimal precision])
-	AC_MSG_RESULT([$PAC_FC_MAX_REAL_PRECISION])
-    else
-        AC_MSG_RESULT([Error])
-        AC_MSG_ERROR([No output from Fortran test program!])
-    fi
-    rm -f pac_fconftest.out
+        AC_MSG_CHECKING([for Fortran REAL KINDs])
+        AC_MSG_RESULT([$PAC_FC_ALL_REAL_KINDS])
+        AC_MSG_CHECKING([for Fortran REALs maximum decimal precision])
+        AC_MSG_RESULT([$PAC_FC_MAX_REAL_PRECISION])
 ],[
     AC_MSG_RESULT([Error])
     AC_MSG_ERROR([Failed to run Fortran program to determine available KINDs])
@@ -314,29 +305,22 @@ AC_REQUIRE([PAC_FC_AVAIL_KINDS])
 AC_MSG_CHECKING([sizeof of available INTEGER KINDs])
 AC_LANG_PUSH([Fortran])
 pack_int_sizeof=""
-rm -f pac_fconftest.out
 
 for kind in `echo $pac_validIntKinds | sed -e 's/,/ /g'`; do
   AC_LANG_CONFTEST([
       AC_LANG_SOURCE([
                 PROGRAM main
                 USE ISO_C_BINDING
+                USE ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
                 IMPLICIT NONE
                 INTEGER (KIND=$kind) a
-                OPEN(8, FILE='pac_fconftest.out', FORM='formatted')
-                WRITE(8,'(I0)') $FC_SIZEOF_A
-                CLOSE(8)
+                WRITE(stderr,'(I0)') $FC_SIZEOF_A
                 END
             ])
         ])
         AC_RUN_IFELSE([],[
-            if test -s pac_fconftest.out ; then
-                sizes="`cat pac_fconftest.out`"
-                pack_int_sizeof="$pack_int_sizeof $sizes,"
-            else
-                AC_MSG_ERROR([No output from Fortran test program!])
-            fi
-            rm -f pac_fconftest.out
+            sizes=$(./conftest$EXEEXT 2>&1)
+            pack_int_sizeof="$pack_int_sizeof $sizes,"
         ],[
             AC_MSG_ERROR([Fortran program fails to build or run!])
         ],[
@@ -359,22 +343,16 @@ for kind in `echo  $pac_validRealKinds | sed -e 's/,/ /g'`; do
       AC_LANG_SOURCE([
                 PROGRAM main
                 USE ISO_C_BINDING
+                USE ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
                 IMPLICIT NONE
                 REAL (KIND=$kind) :: a
-                OPEN(8, FILE='pac_fconftest.out', FORM='formatted')
-                WRITE(8,'(I0)') $FC_SIZEOF_A
-                CLOSE(8)
+                WRITE(stderr,'(I0)') $FC_SIZEOF_A
                 END
             ])
         ])
         AC_RUN_IFELSE([],[
-            if test -s pac_fconftest.out ; then
-                sizes="`cat pac_fconftest.out`"
-                pack_real_sizeof="$pack_real_sizeof $sizes,"
-            else
-                AC_MSG_ERROR([No output from Fortran test program!])
-            fi
-            rm -f pac_fconftest.out
+            sizes=$(./conftest$EXEEXT 2>&1)
+            pack_real_sizeof="$pack_real_sizeof $sizes,"
         ],[
             AC_MSG_ERROR([Fortran program fails to build or run!])
         ],[
@@ -396,33 +374,27 @@ rm -f pac_fconftest.out
       AC_LANG_SOURCE([
                 PROGRAM main
                 USE ISO_C_BINDING
+                USE ISO_FORTRAN_ENV, ONLY : stderr=>ERROR_UNIT
                 IMPLICIT NONE
                 INTEGER a
                 REAL b
                 DOUBLE PRECISION c
-                OPEN(8, FILE='pac_fconftest.out', FORM='formatted')
-                WRITE(8,*) $FC_SIZEOF_A
-	        WRITE(8,*) KIND(a)
-	        WRITE(8,*) $FC_SIZEOF_B
-	        WRITE(8,*) KIND(b)
-                WRITE(8,*) $FC_SIZEOF_C
-                WRITE(8,*) KIND(c)
-                CLOSE(8)
+                WRITE(stderr,*) $FC_SIZEOF_A
+                WRITE(stderr,*) KIND(a)
+                WRITE(stderr,*) $FC_SIZEOF_B
+                WRITE(stderr,*) KIND(b)
+                WRITE(stderr,*) $FC_SIZEOF_C
+                WRITE(stderr,*) KIND(c)
                 END
             ])
         ])
         AC_RUN_IFELSE([],[
-            if test -s pac_fconftest.out ; then
-                PAC_FORTRAN_NATIVE_INTEGER_SIZEOF="`sed -n '1p' pac_fconftest.out`"
-                PAC_FORTRAN_NATIVE_INTEGER_KIND="`sed -n '2p' pac_fconftest.out`"
-                PAC_FORTRAN_NATIVE_REAL_SIZEOF="`sed -n '3p' pac_fconftest.out`"
-                PAC_FORTRAN_NATIVE_REAL_KIND="`sed -n '4p' pac_fconftest.out`"
-                PAC_FORTRAN_NATIVE_DOUBLE_SIZEOF="`sed -n '5p' pac_fconftest.out`"
-                PAC_FORTRAN_NATIVE_DOUBLE_KIND="`sed -n '6p' pac_fconftest.out`"
-            else
-                AC_MSG_ERROR([No output from Fortran test program!])
-            fi
-            rm -f pac_fconftest.out
+            PAC_FORTRAN_NATIVE_INTEGER_SIZEOF=$(./conftest$EXEEXT 2>&1 | sed -n '1p')
+            PAC_FORTRAN_NATIVE_INTEGER_KIND=$(./conftest$EXEEXT 2>&1 | sed -n '2p')
+            PAC_FORTRAN_NATIVE_REAL_SIZEOF=$(./conftest$EXEEXT 2>&1 | sed -n '3p')
+            PAC_FORTRAN_NATIVE_REAL_KIND=$(./conftest$EXEEXT 2>&1 | sed -n '4p')
+            PAC_FORTRAN_NATIVE_DOUBLE_SIZEOF=$(./conftest$EXEEXT 2>&1 | sed -n '5p')
+            PAC_FORTRAN_NATIVE_DOUBLE_KIND=$(./conftest$EXEEXT 2>&1 | sed -n '6p')
         ],[
             AC_MSG_ERROR([Fortran program fails to build or run!])
         ],[
@@ -434,7 +406,6 @@ AC_LANG_POP([Fortran])
 
 AC_DEFUN([PAC_FC_LDBL_DIG],[
 AC_MSG_CHECKING([maximum decimal precision for C])
-rm -f pac_Cconftest.out
   AC_LANG_CONFTEST([
       AC_LANG_PROGRAM([
                 #include <float.h>
@@ -458,19 +429,12 @@ rm -f pac_Cconftest.out
                 #define C_LDBL_DIG LDBL_DIG
                 #endif
                 ],[[
-                  FILE * pFile;
-                  pFile = fopen("pac_Cconftest.out","w");
-                  fprintf(pFile, "%d\n%d\n", C_LDBL_DIG, C_FLT128_DIG);
+                  fprintf(stderr, "%d\n%d\n", C_LDBL_DIG, C_FLT128_DIG);
                 ]])
         ])
         AC_RUN_IFELSE([],[
-            if test -s pac_Cconftest.out ; then
-	        LDBL_DIG="`sed -n '1p' pac_Cconftest.out`"
-	        FLT128_DIG="`sed -n '2p' pac_Cconftest.out`"
-            else
-                AC_MSG_ERROR([No output from C decimal precision program!])
-            fi
-            rm -f pac_Cconftest.out
+            LDBL_DIG=$(./conftest$EXEEXT 2>&1 | sed -n '1p')
+            FLT128_DIG=$(./conftest$EXEEXT 2>&1 | sed -n '2p')
         ],[
             AC_MSG_ERROR([C program fails to build or run!])
         ],[])